Tidal acceleration of black holes and superradiance

Research output: Contribution to journal › Journal article › Research › peer-review

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Tidal acceleration of black holes and superradiance. / Cardoso, Vitor; Pani, Paolo.

In: Classical and Quantum Gravity, Vol. 30, No. 4, 045011, 21.02.2013.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Cardoso, V & Pani, P 2013, 'Tidal acceleration of black holes and superradiance', Classical and Quantum Gravity, vol. 30, no. 4, 045011. https://doi.org/10.1088/0264-9381/30/4/045011

APA

Cardoso, V., & Pani, P. (2013). Tidal acceleration of black holes and superradiance. Classical and Quantum Gravity, 30(4), [045011]. https://doi.org/10.1088/0264-9381/30/4/045011

Vancouver

Cardoso V, Pani P. Tidal acceleration of black holes and superradiance. Classical and Quantum Gravity. 2013 Feb 21;30(4). 045011. https://doi.org/10.1088/0264-9381/30/4/045011

Author

Cardoso, Vitor ; Pani, Paolo. / Tidal acceleration of black holes and superradiance. In: Classical and Quantum Gravity. 2013 ; Vol. 30, No. 4.

Bibtex

@article{9252d46456dc4611a8fdca5311bc2597,
title = "Tidal acceleration of black holes and superradiance",
abstract = "Tidal effects have long ago locked the Moon in a synchronous rotation with the Earth and progressively increase the Earth-Moon distance. This 'tidal acceleration' hinges on dissipation. Binaries containing black holes may also be tidally accelerated, dissipation being caused by the event horizon-a flexible, viscous one-way membrane. In fact, this process is known for many years under a different guise: superradiance. Here, we provide compelling evidence for a strong connection between tidal acceleration and superradiant scattering around spinning black holes. In general relativity, tidal acceleration is obscured by the gravitational-wave emission. However, when coupling to light scalar degrees of freedom is allowed, an induced dipole moment produces a 'polarization acceleration', which might be orders of magnitude stronger than tidal quadrupolar effects. Consequences for optical and gravitational-wave observations are intriguing and it is not impossible that imprints of such a mechanism have already been observed.",
keywords = "WAVES",
author = "Vitor Cardoso and Paolo Pani",
year = "2013",
month = feb,
day = "21",
doi = "10.1088/0264-9381/30/4/045011",
language = "English",
volume = "30",
journal = "Classical and Quantum Gravity",
issn = "0264-9381",
publisher = "Institute of Physics Publishing Ltd",
number = "4",

}

RIS

TY - JOUR

T1 - Tidal acceleration of black holes and superradiance

AU - Cardoso, Vitor

AU - Pani, Paolo

PY - 2013/2/21

Y1 - 2013/2/21

N2 - Tidal effects have long ago locked the Moon in a synchronous rotation with the Earth and progressively increase the Earth-Moon distance. This 'tidal acceleration' hinges on dissipation. Binaries containing black holes may also be tidally accelerated, dissipation being caused by the event horizon-a flexible, viscous one-way membrane. In fact, this process is known for many years under a different guise: superradiance. Here, we provide compelling evidence for a strong connection between tidal acceleration and superradiant scattering around spinning black holes. In general relativity, tidal acceleration is obscured by the gravitational-wave emission. However, when coupling to light scalar degrees of freedom is allowed, an induced dipole moment produces a 'polarization acceleration', which might be orders of magnitude stronger than tidal quadrupolar effects. Consequences for optical and gravitational-wave observations are intriguing and it is not impossible that imprints of such a mechanism have already been observed.

AB - Tidal effects have long ago locked the Moon in a synchronous rotation with the Earth and progressively increase the Earth-Moon distance. This 'tidal acceleration' hinges on dissipation. Binaries containing black holes may also be tidally accelerated, dissipation being caused by the event horizon-a flexible, viscous one-way membrane. In fact, this process is known for many years under a different guise: superradiance. Here, we provide compelling evidence for a strong connection between tidal acceleration and superradiant scattering around spinning black holes. In general relativity, tidal acceleration is obscured by the gravitational-wave emission. However, when coupling to light scalar degrees of freedom is allowed, an induced dipole moment produces a 'polarization acceleration', which might be orders of magnitude stronger than tidal quadrupolar effects. Consequences for optical and gravitational-wave observations are intriguing and it is not impossible that imprints of such a mechanism have already been observed.

KW - WAVES

U2 - 10.1088/0264-9381/30/4/045011

DO - 10.1088/0264-9381/30/4/045011

M3 - Journal article

VL - 30

JO - Classical and Quantum Gravity

JF - Classical and Quantum Gravity

SN - 0264-9381

IS - 4

M1 - 045011

ER -

ID: 300166921